data/cycle/graph_description/easy/graph123.txt

In an undirected graph, (i,j) means that node i and node j are connected with an undirected edge.
The nodes are numbered from 0 to 9, and the edges are: (6,8) (9,8) (2,0) (2,6) (4,2) (5,7) (7,1) (6,5) (7,3).